Here is the full list of all 12 Space Giraffe achievements worth 200 gamerscore.
Collect 20 powerups without missing one.
Get more than 20 Sneeze Bonuses leaving a level.
Finish level 100, having started on level 1.
Finish level 100.
Keep the very first flower to grow alive until the end of the level.
Score over 10 million on Tutorial Level.
Complete level 64 without losing a life while playing it.
End five consecutive levels with Bonus Multiplier 9x.
Don't lose a life for 16 levels.
Complete 16 levels without using jump.
Get Bonus Multiplier up to 9x in one Bull Run.
Get 9 lives and a 9x Bonus Multiplier.